I'd like to be able to read a temperature (ie. 150-200degC) and have it turn on a light when the temperature is reached. The temperature interface is a Type J Thermocouple wire. I've done some research today and I think I would need: Arduino, Relay, and Type J Thermocouple Amplifier. I would like to create something that is compact and not have wires and breadboards hanging around.
I was looking into Relay shields like the Seedstudio Relay Shield and then adding an appropriate thermocouple amplifier.
However, would it be easier to just get a R/C relay and connect that with a light and send PWM signals from an arduino?
This relay switch shows that it just activates from a PWM signal from RC receiver.